hi am exporting adf table to excell i what to optimize my code using BigGridDemo.java
how can i do the same using below code
[code]
[code]
AM running out of memory
how can i do the same using below code
[code]
Code:
public void generateExcel(FacesContext facesContext, OutputStream outputStream) throws IOException {
try {
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet worksheet = workbook.createSheet("Big Grid");
// Get all the rows of a iterator
/////////////////////////////////////////////////////////////////////////////////////////////////////
DCBindingContainer bindings = (DCBindingContainer)BindingContext.getCurrent().getCurrentBindingsEntry();
DCIteratorBinding dcIteratorBindings = bindings.findIteratorBinding("CustomClientView1Iterator");
Row rowss = worksheet.createRow(0);
ViewObject yourVO= dcIteratorBindings.getViewObject();
// Get all the rows of a ViewObject
RowSetIterator iter = yourVO.createRowSetIterator("CustomClient");
iter.reset();
int rowCounter = 0;
while (iter.hasNext()){
Cell cell = null;
oracle.jbo.Row row = iter.next();
//print header on first row in excel
if (rowCounter == 0) {
rowss = worksheet.createRow(rowCounter);
int cellCounter = 0;
for (String colName : row.getAttributeNames()) {
cell = rowss.createCell(cellCounter);
cell.setCellValue(colName);
// cellA1.setCellValue(colName);
cellCounter++;
}
}
//print data from second row in excel
rowCounter++;
//////////////////////////////////////////////////////////////
int cellCounter = 0;
rowss = worksheet.createRow(rowCounter);
for (String colName : row.getAttributeNames()) {
System.out.println("hello "+row.getAttribute(colName));
System.out.println("hello "+colName);
cell = rowss.createCell(cellCounter);
rowCounter++;
/// cell.setCellValue(new HSSFRichTextString(rs.getS));
if(!isBlank(colName)){
if (colName.equalsIgnoreCase("CcnCode")) {
cell.setCellValue(row.getAttribute(colName).toString());
System.out.println("colName "+colName+"row.getAttribute(colName).toString()"+row.getAttribute(colName).toString());
}
}
//logic for cell formatting
else if (colName.equalsIgnoreCase("CcnName")) {
cell.setCellValue(row.getAttribute(colName).toString());
}
//make it double if you want and convert accordingly
else if (colName.equalsIgnoreCase("CcnRegDate")){
cell.setCellValue(row.getAttribute(colName).toString());
}
else if (colName.equalsIgnoreCase("CcnCancelDate")){
if(null!=row.getAttribute(colName)){
cell.setCellValue(row.getAttribute(colName).toString());
}
} else if (colName.equalsIgnoreCase("CcnUndertaking")){
if(null!=row.getAttribute(colName)){
cell.setCellValue(row.getAttribute(colName).toString());
}
}
else if (colName.equalsIgnoreCase("CcnCode8")){
if(null!=row.getAttribute(colName)){
cell.setCellValue(row.getAttribute(colName).toString());
} }
else
cell.setCellValue(row.getAttribute(colName).toString());
cellCounter++;
}
worksheet.createFreezePane(0, 1, 0, 1);
}
workbook.write(outputStream);
outputStream.flush();
}
catch (Exception e) {
e.printStackTrace();
}
}AM running out of memory